PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6412Screw,machine

Unity Manufacturing Co · NSN 5305-01-044-8343 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-044-8343 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-044-8343. Primary manufacturer part number: 6412.
Features
  • Screw,machine — FSC 5305
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Screw Material: COPPER ALLOY
  • Thread Quantity Per Inch: 32
  • Head Diameter: 0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
  • Screw Surface Treatment: CHROMIUM
  • Thread Direction: RIGHT-HAND
  • Head Style: OVAL COUNTERSUNK
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-044-8343, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Unity Manufacturing Co. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-044-8343
Primary Part Number6412
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerUnity Manufacturing Co
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Screw MaterialCOPPER ALLOY
Thread Quantity Per Inch32
Head Diameter0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
Screw Surface TreatmentCHROMIUM
Thread DirectionRIGHT-HAND
Head StyleOVAL COUNTERSUNK
Internal Drive StyleSLOT
Nominal Thread Diameter0.138 INCHES IN
Thread Length0.203 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
Fastener Length0.312 INCHES NOMINAL IN
Thread Class2A A
Countersink Angle81.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2590-00-045-37976412 INTERCHANGEABLE
Parts Kit,horn Button Switch
Eaton Corporation Div Eaton Fluid Power
3110-00-144-8556 INTERCHANGEABLE
Bearing,ball,annular
5999-00-222-014813182 INTERCHANGEABLE
Cap,electrical
Roanwell, Llc
5910-00-243-631360-0725-20003-902 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Tronser, Inc Dba Tronser Inc
5365-00-270-21415A7044 INTERCHANGEABLE
Spacer,ring
Napco International Llc Dba Napco International Inc
5310-00-333-73278329336 INTERCHANGEABLE
Nut
U S Army Tank Automotive Command Amsta-Im-Mm
4820-00-473-4879212-59-038PC421 INTERCHANGEABLE
Valve,angle
Naval Sea Systems Command
5915-00-488-33172921066-2 INTERCHANGEABLE
Filter,band Pass
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5985-00-880-2134641-2 INTERCHANGEABLE
Waveguide Assembly
Waveline Inc
5945-01-084-5032641-2 INTERCHANGEABLE
Relay,solid State
Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/
Cross-Reference Index
Part NumberManufacturer
6412 PRIMARY Unity Manufacturing Co (USA)
Related Parts
2590-00-045-3797INTERCHANGEABLE
PARTS KIT,HORN BUTTON SWITCH
6412
3110-00-144-8556INTERCHANGEABLE
BEARING,BALL,ANNULAR
5999-00-222-0148INTERCHANGEABLE
CAP,ELECTRICAL
13182
5910-00-243-6313INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
60-0725-20003-902
5365-00-270-2141INTERCHANGEABLE
SPACER,RING
5A7044
5310-00-333-7327INTERCHANGEABLE
NUT
8329336
4820-00-473-4879INTERCHANGEABLE
VALVE,ANGLE
212-59-038PC421
5915-00-488-3317INTERCHANGEABLE
FILTER,BAND PASS
2921066-2
5985-00-880-2134INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
641-2
5945-01-084-5032INTERCHANGEABLE
RELAY,SOLID STATE
641-2
4730-01-242-6381INTERCHANGEABLE
FLANGE,PIPE
6515-01-325-8767INTERCHANGEABLE
INTRAVENOUS INJECTION SET
6412

Frequently Asked Questions

What is NSN 5305-01-044-8343?

NSN 5305-01-044-8343 is a Screw,machine, manufactured by Unity Manufacturing Co, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-044-8343?

NSN 5305-01-044-8343 has 1 cross-referenced part number: 6412 (Unity Manufacturing Co).

What NSN replaces 5305-01-044-8343?

There are 12 known substitutes for 5305-01-044-8343: 2590-00-045-3797, 3110-00-144-8556, 5999-00-222-0148 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6412?

Key specifications for 6412: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Screw Material: COPPER ALLOY; Thread Quantity Per Inch: 32; Head Diameter: 0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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